material-science-2019-keynote

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February 25-26, 2019 | Paris, France

Materials Science and Engineering

International Conference on

Journal of Materials Science and Nanotechnology | Volume 3

ayered Double Hydroxides (LDHs) are composed of the

alternating positively-charged mixed metal (typically, MII-

MIII) hydroxide layers and the interlayersoccupiedbyanions and

watermolecules. Themetal cations in the layers are coordinated

by O-H units forming 2D structures in which the oxygen

octahedra are edge-linked. LDHs find a wide use in catalysis and

as anion exchangers and adsorbents. Magnetic, luminescent

and others) cations in the hydroxide layer due to their individual

or cooperative phenomena can induce new effects and novel

functionalities in these materials. The characteristic feature

of such modified LDHs is that their physical and chemical

properties are tuned by means of continuous variation of the

anion content in the interlayer. Moreover, provided that at

least one of MII and MIII is magnetic, a MII-MIII cation ordering

can result in formation of various magnetic frameworks. In

this respect, LDHs are convenient and unique objects for the

experimental modelling of the 2D quantummagnets and other

cooperative effects. Because of the layered nature, the LDH

crystallites are very anisotropic. Therefore, such objects are

suitable for formation of arranged nanostructures. An ability of

LDHs to intercalate anion-molecular complexes offers also the

opportunity for a 2D arrangement of the species which are the

independent functional units such as magnets, ferroelectrics,

photovoltaics. Ordered arrangement of the functional units

in interlayer are expected to result in enhancement of the

respective effects and even to induce new effects.

Speaker Biography

Andrei N Salak completed his PhD in 1994 at the Institute of Solid State and

Semiconductor Physics (Minsk, Belarus). In 2002, he received a post-doctoral position

in CICECO - Centre for Research in Ceramics and Composite Materials at the University

of Aveiro (Aveiro, Portugal). At present, he is an Invited Researcher at CICECO. He

specializes in crystal structure determination and characterization dielectric and

magnetic properties of inorganic solids, particularly perovskite-like materials and

layered ion exchangers. He is a co-author of more than 100 papers in international

peer-reviewed journals with over 1200 citations.

Andrei N Salak

University of Aveiro, Portugal

Multifunctional layered double hydroxides